Spark-arrester



(No Model.) I

E. J. HADLOCK.

SPARK ARRESTBR.

No. 450,012. Patented Apr. 7, 1891.v

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y UNITED STATES yPATENT OFFICE.

EDSON J. HADLOCK, OF BIG SPRING, TEXAS.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters 'Patent No. 450,012, dated April-i7, 1891.

Application filed November 18, 1890.' Serial No. 371,819. (No model.) 1

To all whom, it may concern:

Be it known that I, EDSON J. HADLOCK, of

Big Spring, in the county of Howard and State of Texas, have invented a new and Im proved Spark-Arrester, of which the following is a full, clear, and exact description.

My invention relates to improvements in spark-arresters for locomotives; and the objects of my invention are to produceasparkarrester which will prevent the sparks and cinders from fallingupon the train and-upon surrounding lands and buildings, which will effect a more complete combustion of the fuel used in the locomotive, and which will give a greater draft to the same, and also to provide a cinder-box and ash-pan by means of which the cinders and ashes may be easi ily collected and dumped, and by means of which also the draft may be regulated.

To this end my invention consists in certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying rawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a broken side elevation of an ordinary locomotive-boiler provided with the arrester and ash-pan embodying my invention, the arrester and ash-pan being shown in section. Fig. 2 is a broken. vertical transverse section on the line 2 2 of Fig. l, looking toward the engine-cab. Fig. 3 is ahorizontal section through the arrester on the line 3 3 of Fig. l. Fig-4 is a vertical section of a modi fled form of arrester on the line 4l et of Fig. 5; and Fig. 5 is a broken front elevation of the same, partly in section. V

The locomotive-boiler A is of the usual construct-ion, having a suitable fire-box B and a smoke-stack C, and having also the ordie, which fits upon the box D, and it is of approximately the same height as thesmokestack C, is open at the top, and is Vdivided by a curved partition e into two chambers- E E2. The chamber E is curved forwardly at its upper end, and its opening aligns horizontally with the nozzle of the smoke-stack C, l

so that the smoke and cinders issuing from the stack will pass directly into it, and the chamber opens at the bottom into the box D. The chamber E2 extends vertically c through the arrester, its lower end communicating with the box D and its upper end opening into the-air.

The box D is provided with a double deiiector D', which is raised in its central portion, as Vbest shown in Fig. `2,.and the apeX of which passes longitudinally beneath the chambers E and E2, and opening from each side of the boX D are pipes F, which extend along each side of the boiler A and open at finto the cinderboX G and at f into the {ire-box B. Both these openings from the pipes F are not used at the same time, but they are used separately according to the form of the arrester, as hereinafter described.

The cinder-boX G is arranged in the rear of the fire-box B and above the ash-pan H, and the rear portion of the cinder-box is raised slightly, as best shown in Fig. l, so that the cinders that are in it will slide forward upon the ash-pan. The cinder-box G has a damper G pivoted in an opening in the bottom of the box, and the damper is provided with a rod g, which extends upward into the engine-cab, `and by means of which the damper may be regulated.

The ash-pan H is provided with a series of transverse slots h, and a slide J is arranged upon the upper side of the ash-pan H, the slide corresponding in length to the length of the ash-pan and having transverse slotsj, whichcorrespond in size lto the slots in the ash-pan, so that when the slots in the ash-pan and slide align the ashes and cinders will be dropped through upon the ground, and when they do not align the ash-box will be closed. On each side of the slide J is a strip J of iron, which strips serve as guides for the slide and prevent obstructions from getting beneath it, and the slide is connected by a bolt 7c, which extends downward through a slot in the ashpan H, with a horizontal rod K, the rear end IOO of which is pivoted to a lever L, which extends upward into the cab, the said lever being pivoted centrally to a support Z, so that by manipulating the lever the position of the slide in relation to the ash-pan may be regulated. At the rear end of the ash-box is a damper M, which is pivoted at its upper edge, as shown at m, and which is connected by 4-a rod n (indicated by dotted lines in Fig. l) to one arm of a bell-crank P, the other arm of the bell-crank being provided with a rod P, which extends upward into the cab, and by means of which the damper may be operated.

Vhen my invention is used, the ordinary dampers are dispensed with, and, if desired, the air may be omitted beneath the grates by means of the dampers G and M.

In Figs. 4 and 5 I have shown a modified form of the arrester, the arrester F. having the ilanges e., by means of which it is attached to the box D; but in this form the central partition is dispensed with and the main portion of the arrester is curved forward, as is best shown in Fig. 4, so that all the smoke issuing from the smoke-stack will pass into vthe arrester and through the branch pipes F, which open from the bottom ot' the arrester through the box D and pass to the fire box like the pipes F, already described.

/Vhen the arresterE is used, the pipes F are connected directly with the Iirebox, as shown at f', and the cinder-box G is dispensed with, and as the smoke issues from the smoke-stack it passes into the arrester, is deflected by the plate D into the pipes F, and passes directly into the fire-box B through the opening f', -where all the combustible matter is consumed, and this operation is facilitated by the exhaust-steam, which is let into the smoke-stack in the usual way.l It will be seen that a certain amount of air will pass through the pipes with the smoke, and this will afford a sutlicient draft, so that the ordinary dampers may be dispensed with.

The arrester should be placed far enough in the rear of the smoke-stack so as to allow sufficient air to enter the arrester, but not far enough but that the smoke will all enter it. The heavier portions of the smoke will pass down the pipes F and the lighter parts willv pass upward through the chamber E2 t-o the air.

lVhen the form of arrester shown in Figs. 4L and 5 is used, the pipes F are connected with the cinder-box G, as shown, and the cinders will be carried through the pipes to the cinder-box from whence they will delivered lupon the slide J, and at convenient points the slide may be operated so that the' cinders and ashes may be dumped through the slots j and 7L.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent-n l. The combination, with the curved smokestack, the box mounted upon the boiler in the rear of the smoke-stack, and the conductingpipes opening from the box, of the arrester adapted to rest upon the box, said arrester having a curved chamber to receive the smoke and conduct it to the box, and a chamber in the rear of the curved chamber opening from the box into the air, substantially as described. 2. In a spark-arrester, the combination of the curved smoke-stack, the box mounted in the rear of the smoke-stack, the conductingpipes leading from the box to the tire-box,

the arrester mounted upon the box and provided with a curved chamber to receive the smoke and conduct it to the box, and an exitchamber in the rear ot' the curved chamber, substantially as described. p

3. The combination, with the spark-arrester of the character described, of a cinder-box arranged to deliver upon the ash-pan, pipes leading from beneath the arrester to the cinder-box, and a damper pivoted in the cinderbox and connected by a suitable rod with the engine-cab, substantially as described.

EDSON J. HADLOOK,

Witnesses:

S. H. CoWAN,

W. G. BIRDWELL.

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